A, also called a or, is a private collection of waka poems compiled by the author of the poems included. The term is used in contrast to chokusenshū, imperially-commissioned collections both written and compiled by multiple people, and, anthologies of poems by multiple poets privately compiled by a single editor.
. Donald Keene . A History of Japanese Literature, Vol. 1: Seeds in the Heart - Japanese Literature from Earliest Times to the Late Sixteenth Century . . New York . 1999 . 978-0-231-11441-7 .